From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 294E9C10F14 for ; Thu, 3 Oct 2019 16:52:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F28CF20865 for ; Thu, 3 Oct 2019 16:52:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570121567; bh=fWEaeGtp2H7l4xjNjdh86W44KFTLhlpFqGa86ZHBHj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RnAgZfc5ILXQ/hejOEMdOmKNyxmdIuWEm0WU7bJCjdUOK0igbimamEq35q0HMrjjp U81IzP4cRMvoSXMnvy985dxIcq62D0wa+ZvMWE30rupEf7N6Sw0ZwAt85yT49fOutp xZ28jWbS1gnZfnVbYLjhDBqx4kQjWwaTJeN+QiTM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393015AbfJCQwq (ORCPT ); Thu, 3 Oct 2019 12:52:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:40422 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406218AbfJCQwj (ORCPT ); Thu, 3 Oct 2019 12:52:39 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E37442070B; Thu, 3 Oct 2019 16:52:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570121558; bh=fWEaeGtp2H7l4xjNjdh86W44KFTLhlpFqGa86ZHBHj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YG8Z297MdlE5WSMhmwMuNMSM32DDfHEr2ok4KQB1sovCbT7iSET/twAcsc2sl8FGL 15B2g/ZJBphGKIno/OF5Pq5DwJBhluOm8qTleI33NvkECvtkjE+mo5rbznv8cyIo7d Et8+KVm7UP62oCXSEqRwjJHu7K6MPSeutcR1TFbI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Denis Kenzior , Johannes Berg Subject: [PATCH 5.3 323/344] cfg80211: Purge frame registrations on iftype change Date: Thu, 3 Oct 2019 17:54:48 +0200 Message-Id: <20191003154610.836574231@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154540.062170222@linuxfoundation.org> References: <20191003154540.062170222@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Denis Kenzior commit c1d3ad84eae35414b6b334790048406bd6301b12 upstream. Currently frame registrations are not purged, even when changing the interface type. This can lead to potentially weird situations where frames possibly not allowed on a given interface type remain registered due to the type switching happening after registration. The kernel currently relies on userspace apps to actually purge the registrations themselves, this is not something that the kernel should rely on. Add a call to cfg80211_mlme_purge_registrations() to forcefully remove any registrations left over prior to switching the iftype. Cc: stable@vger.kernel.org Signed-off-by: Denis Kenzior Link: https://lore.kernel.org/r/20190828211110.15005-1-denkenz@gmail.com Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- net/wireless/util.c | 1 + 1 file changed, 1 insertion(+) --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -960,6 +960,7 @@ int cfg80211_change_iface(struct cfg8021 } cfg80211_process_rdev_events(rdev); + cfg80211_mlme_purge_registrations(dev->ieee80211_ptr); } err = rdev_change_virtual_intf(rdev, dev, ntype, params);